look up the entertainment loading companys. they are generally always looking for loaders. it is a tough job but there is usually work. particularly when big tours come through and operas etc. it is generally loading and unloading trucks for of sound and lighting equipment for concerts etc.
or even a company like staging connections that does everything. not the greatest company but they may train you up if you can get in.
http://www.stagingconnections.com/de...ticle&ID=21613